A word used in place of something that you don't have a name for. Sort of like Thingamabob.
1. Child: "What's that mommy?"

Parent: "It's a Snoobeeknocker pumpkin."

2. Guy 1: "What's that strange looking contraption over there?"

Guy 2: "It's a Snoobyknocker man!"
by Etrayu March 26, 2008
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